ICS9250-13 Datasheet (Integrated Circuit Systems) - Frequency Generator & Integrated Buffers

ICS9250-13, Frequency Generator & Integrated Buffers

The ICS9250-13 generates all clocks required for high speed RISC or CISC microprocessor systems such as Intel PentiumPro or Cyrix.

Eight different reference frequency multiplying factors are externally selectable with smooth frequency transitions.

Spread spectrum may be enabled through I2C programmi

ICS9250-13 Features

* 3.3V outputs: SDRAM, PCI, REF, 48/24MHz 2.5V or 3.3V outputs: CPU 20 ohm CPU clock output impedance 20 ohm PCI clock output impedance Skew from CPU (earlier) to PCI clock - 1 to 4 ns, center 2.6 ns. No external load cap for CL=18pF crystals ±250 ps CPU, PCI clock skew 4